Hello, I’ve been using KeeFox on my Windows desktop and on my old laptop running Linux Mint 18 with no problems for a long time.
Today I’ve installed Linux Mint 19.1 on another laptop, then installed keepass2 following the instructions on the official website, then proceeded to install the KeePassRPC.plgx plugin (in the Plugin directory) but when I open KeePass it gives an error message saying that the plugin is not compatible with current version.
What should I do?
Thanks

Update the repositories and upgrade mono:
sudo apt update
sudo apt upgrade (this will upgrade all the packages that are marked as upgradeable, if you don’t want to upgrade everything you’ll need to update only those you want to)